Can Brake Controller be Used for Braking on Vehicle Flat Towed
Updated 05/24/2017 | Published 05/22/2017 >
Products Featured in This Question
Question:
I have a brake controller inherited from previous RV owner and thinking to use it in my Subaru crosstrek for flat towing behind my RV. Since the brake controller uses 12VDC power from the car, is keeping the ignition on ACC the only way to power the controller? Eventually, the car battery will run out... Does below tow package supply power from the RV to charge the cars battery? RM-15267 Thx!
asked by: Chris
Expert Reply:
Brake controllers can't activate the brakes of a vehicle being flat towed so you will have to look into a supplemental braking system. Some do require power to operate and on vehicles that also require the battery be disconnected the solution is to use an outlet kit like part # RM-9332 which wires to the battery and then gives an outlet.
And finally, most states now require supplemental braking in the vehicle being flat towed. The easiest system to set up and use is the Blue Ox Patriot # BLU37TR, that applies the vehicle brakes in proportion to how much the tow vehicle is braking. This is the safest way to stop and it reduces wear and tear on both vehicles.
Product Page this Question was Asked From
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Video: Install: 12 Volt Outlet Kit, 20 amps on a 2021 Jeep Wrangler Unlimited
- Shop: Charging Station for RVs - 2 USB Ports - 12V Socket - Black
- Shop: 12 Volt Outlet Kit, 20 amps
- Shop: Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,000 lbs
- Shop: Demco Hydraulic Brake Actuator w/ Drop - Disc - Zinc - 2-5/16" Ball - 8,000 lbs
- Video: Demco Hydraulic Brake Actuator-DM8609101 Feature Review
- Q&A: Can Curt Echo Trailer Brake Controller Control Brakes Of A Flat Towed Vehicle
- Shop: Vehicle Tow Bar Wiring
- Shop: Brake Controller
- Shop: Curt Discovery NEXT Trailer Brake Controller - Up to 4 Axles - Time Delayed
- Video: Set up: Tekonsha Prodigy P2 Trailer Brake Controller on a 2011 Ford Edge
- Video: Trailer Wiring Harness Installation - 2013 Ford Edge
- Video: In-Depth Review of the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles
- Q&A: Will Curt RVibrake Shadow 2 Fit 2026 Ford Maverick Hybrid
- Q&A: How To Power A Furrion Vision S RV Camera Monitor In A Vehicle Without A Cigarette Lighter Port
- Q&A: Flat Tow Set Up For a 2026 Jeep Wrangler Rubicon
- Article: Trailer Wiring Diagrams
- Q&A: Best Flat Tow Setup for 2026 Ford Maverick Hybrid
- Q&A: Recommended Flat Towing Parts for a 2022 Ford Maverick
- Q&A: Choosing Between the Brake Buddy Select 3 and the Blue Ox Patriot Supplemental Braking System
- Article: Best Vehicles to Flat Tow Behind an RV
- Article: Flat Towing Package for 2012-2014 Honda CR-V
- Article: Flat Towing Package for 2007-2018 JK Jeep Wrangler and Wrangler Unlimited
- Article: Flat Towing Package for 2020 Jeep Wrangler
- Article: Must-Have Flat Towing Components
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)


